these 3 derivations will be built:
  /nix/store/cd0r6msdk1287d1gh881zg12qxy4l4zb-treefmt.toml.drv
  /nix/store/nfqqp6ylyzjbywh199p51w1xgcs458v9-treefmt.drv
  /nix/store/ca5yj0h2jlvgxrqir3p20bq7lxa8icj3-treefmt-check.drv